Finding the Fourth Proportional to 139,368.28, 192,356.24 and 82,768.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,368.28 : 192,356.24 = 82,768.72 : x
2. Step 2: Convert to fraction form
   139,368.28/192,356.24 = 82,768.72/x
3. Step 3: Cross multiply
   139,368.28x = 192,356.24 × 82,768.72
4. Step 4: Simplify right side
   139,368.28x = 15,921,079,768.81
5. Step 5: Solve for x
   x = 15,921,079,768.81/139,368.28
6. Step 6: Final answer
   x = 114,237.47